批处理就是一系列事件的组合执行:
class Batch {
private:
    std::vector<Event> m_events;
public:
    Batch();
    void add(const Event&);
    void run(Client&);
};

一个简单的调用实例，在浏览某个主题中的帖子时候，当浏览到帖子底部继续按下，就是
浏览下一个帖子，相当于KEY_LEFT+KEY_DOWN+KEY_RIGHT的组合操作(TODO:用户自定义脚本，类似CS里面的一键买枪）

void ViewPostServlet::processEvent(Event event)
{
    int response = processWidgetEvent(event);
    if (response == R_DONE) {
        m_client->backward();
    }
    else if (response == R_BLUR) {
        if (event.type == EV_KEY_DOWN || event.type == EV_KEY_PAGE_DOWN) {
            Batch viewNextBatch;
            viewNextBatch.add(Event(EV_KEY_LEFT));
            viewNextBatch.add(Event(EV_KEY_DOWN));
            viewNextBatch.add(Event(EV_KEY_RIGHT));
            viewNextBatch.run(*m_client);
        }
        else if (event.type == EV_KEY_UP || event.type == EV_KEY_PAGE_UP) {
            Batch viewPrevBatch;
            viewPrevBatch.add(Event(EV_KEY_LEFT));
            viewPrevBatch.add(Event(EV_KEY_UP));
            viewPrevBatch.add(Event(EV_KEY_RIGHT));
            viewPrevBatch.run(*m_client);
        }
    }
}

提高一下效率，Batch内部优化：
void Batch::run(Client& client)
{
    client.doFlush = false;
    unsigned int i;
    for (i = 0; i < m_events.size() - 1; i++) {
        client.processEvent(m_events[i]);
    }
    client.doFlush = true;
    client.processEvent(m_events[i]);
}
只有最后一个事件执行的时候才产生输出.
--
修改:hzt FROM 202.120.189.*
FROM 202.120.189.*